diff --git a/stock.py b/stock.py
index dee7e5d230..5418dde100 100644
--- a/stock.py
+++ b/stock.py
@@ -352,6 +352,8 @@ class CreateShippingUPS(Wizard):
         return service_options
 
     def get_notifications(self, shipment):
+        if not shipment.carrier.ups_notifications:
+            return
         for code in shipment.carrier.ups_notifications:
             shipping_to_address = shipment.shipping_to_address
             email = shipping_to_address.contact_mechanism_get('email')